Iron Forged in Fire: Part One - S1-E1
Continuity mistake: When Obadiah walks in Howard’s office, complaining that Howard rejected his proposal to repurpose the Earth Movers for military application, he is holding a folder in his hand marked confidential. There is a white label on it, and the tab is towards the upper right corner near his head. A few shots later, the folder is completely turned around, the white label and confidential stamp facing the other direction, with the tab by his legs now. (00:02:50)